CVE-2017-15105

MEDIUM

Description

A flaw was found in the way unbound before 1.6.8 validated wildcard-synthesized NSEC records. An improperly validated wildcard NSEC record could be used to prove the non-existence (NXDOMAIN answer) of an existing wildcard record, or trick unbound into accepting a NODATA proof.

References

http://www.securityfocus.com/bid/102817

https://lists.debian.org/debian-lts-announce/2018/01/msg00039.html

https://lists.debian.org/debian-lts-announce/2019/02/msg00022.html

https://unbound.net/downloads/CVE-2017-15105.txt

https://usn.ubuntu.com/3673-1/

Details

Source: MITRE

Published: 2018-01-23

Updated: 2019-10-09

Type: CWE-20

Risk Information

CVSS v2.0

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Impact Score: 1.4

Exploitability Score: 3.9

Severity: MEDIUM